Make DXF construction work

.github/workflows/release_bundle.yml

@@ -11,7 +11,7 @@ jobs:
               run: |
                 sudo add-apt-repository ppa:kicad/kicad-8.0-releases
                 sudo apt update
-                sudo apt install -y wget libgl1 texlive-latex-base texlive-latex-extra latexmk kicad
+                sudo apt install -y wget libgl1 texlive-latex-base texlive-latex-extra latexmk kicad openscad
                 sudo pip install sphinx==6.1.3 sphinx-rtd-theme==1.2.0
             
             - name: Get freecad from cache
@@ -44,6 +44,7 @@ jobs:
                 ls
                 cd case
                 ~/bin/freecad --appimage-extract-and-run -c export_hardware.py
+                python3 generate_dxf.py
                 cd build
                 zip -r ../../hardware.zip *
             - name: export PCB files

case/export_hardware.py

@@ -1,22 +1,31 @@
 import os
 import TechDraw
 import Mesh
+import time
+import subprocess
+
 FreeCAD.openDocument("bigboy.FCStd")
 doc = App.getDocument("bigboy")
+time.sleep(3)
 stl_parts = ("shim", "cap", "cap with vanes", "mount", "shell", "bezel")
 os.makedirs("build/abs/",exist_ok=True)
-for part_name in stl_parts:
-    print(f"Exporting {part_name}") 
-    part = doc.findObjects(Label=f"^{part_name}$")[0]
-    Mesh.export([part],f"build/abs/{part_name}.stl")
+#for part_name in stl_parts:
+#    print(f"Exporting {part_name}") 
+#    part = doc.findObjects(Label=f"^{part_name}$")[0]
+#    Mesh.export([part],f"build/abs/{part_name}.stl")
 
 drawings = doc.findObjects("TechDraw::DrawPage")
+drawing_stls = []
 for drawing in drawings:
     os.makedirs(f"build/{drawing.Label}/", exist_ok=True)
     for view in drawing.OutList:
         if view.TypeId == 'TechDraw::DrawViewPart':
-            print(f"Exporting {view.Source[0].Label}") 
-            TechDraw.writeDXFView(view,f"build/{drawing.Label}/{view.Source[0].Label}.dxf")
+            print(f"Exporting {view.Source[0].Label}")
+            # tech draw does not export DXFs properly from command line - so export as stl and we will post-process with openscad
+            #TechDraw.writeDXFView(view,f"build/{drawing.Label}/{view.Source[0].Label}.dxf")
+            fname = f"build/{drawing.Label}/{view.Source[0].Label}.stl"
+            Mesh.export(view.Source,fname)
+            drawing_stls.append(fname)
 
 FreeCAD.openDocument("button_mould.FCStd")
 doc = App.getDocument("button_mould")

case/generate_dxf.py

@@ -0,0 +1,19 @@
+#!/bin/env python3
+import subprocess
+import glob
+import os
+
+print("Creating DXFs")
+dirs = "[acrylic|Rubber]"
+cwd = os.path.dirname(os.path.abspath(__file__))
+drawing_stls = glob.glob(f"{cwd}/build/{dirs}*/*.stl")
+print("fnames: ", drawing_stls)
+for fname in drawing_stls:
+    if "Window" in fname:
+        rotation = ""
+    else:
+        rotation = "rotate(a=[90,0,0])"
+    command = f'projection() {rotation} import("{fname}");'
+    output = fname.replace("stl","dxf")
+    subprocess.run(["openscad","/dev/null","-D",command,"-o",output])
+